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HousekeepingLast week we finished Unit 2 Lesson 1 and started Lesson 2.
Transformations- Translations (slide)- Reflections (flip)- Rotations (turn)- Dilations (zoom)
Unit 2 Geometry
Goal for today….Learn to transform plane figures using reflections.
A reflection flips a figure across a line to create a mirror image.
Unit 2 Lesson 2
Reflection Rules…
Reflection Rules…
Reflection Rules…
Graph the reflection of triangle FGH across the x-axis.
Multiply the y-coordinate of each vertex by –1.
Rule ImageF(–4, –2)F’ (–4, –2 –1) F’(–4, 2)G(1, –3) G’ (1, –3 –1) G’(1, 3)H(–2, –4)H’ (–2, –4 –1) H’(–2, 4)
H’
G’
F’
Example: Graphing Reflections on a Coordinate Plane
Wrap UpToday we learned to transform plane figures using translations.
What now?IXL Skill Q.4IXL Skill Q.5
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